Fulcrum Digital Junior Engineer Interview Questions and Answers

Test contain mix question from computer fundamentals and aptitude

Q1. Find the leaf node of the binary tree
Ans. 
A leaf node in a binary tree is a node that does not have any children.
• Traverse the binary tree and check if a node has no left or right child, then it is a leaf node.

• Example: In the binary tree 1 -> 2, 3 -> 4, 5, 6 -> 7, 8, the leaf nodes are 4, 5, 7, 8.
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Q2. Check if the given linked list contain loop
Ans. 
Check if a linked list contains a loop by using Floyd's cycle detection algorithm.
• Use two pointers, one moving at twice the speed of the other

• If there is a loop, the two pointers will eventually meet

• Example: 1->2->3->4->5->2 (loop at 2)
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Q3. Find the fist non repeating element in string
Ans. 
Find the first non-repeating element in a string
• Create a frequency map of characters in the string

• Iterate through the string and check the frequency of each character

• Return the first character with frequency 1
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Percentage ,ratio,time & speed

Array,string basic question

Q1. Basic of object oriented programming language
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Q2. Whatever there was in my resume
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Test contain mix question from computer fundamentals and aptitude

Q1. Find the leaf node of the binary tree
Ans. 
A leaf node in a binary tree is a node that does not have any children.
• Traverse the binary tree and check if a node has no left or right child, then it is a leaf node.

• Example: In the binary tree 1 -> 2, 3 -> 4, 5, 6 -> 7, 8, the leaf nodes are 4, 5, 7, 8.
Answered by AI
Add your answer
Q2. Check if the given linked list contain loop
Ans. 
Check if a linked list contains a loop by using Floyd's cycle detection algorithm.
• Use two pointers, one moving at twice the speed of the other

• If there is a loop, the two pointers will eventually meet

• Example: 1->2->3->4->5->2 (loop at 2)
Answered by AI
Add your answer
Q3. Find the fist non repeating element in string
Ans. 
Find the first non-repeating element in a string
• Create a frequency map of characters in the string

• Iterate through the string and check the frequency of each character

• Return the first character with frequency 1
Answered by AI
Add your answer

Percentage ,ratio,time & speed

Array,string basic question

Q1. Basic of object oriented programming language
Add your answer
Q2. Whatever there was in my resume
Add your answer